While keeping shorter history, you will still be able to review older data in graphs, as graphs will use trend values for displaying older data.

While keeping shorter history, you will still be able to review older data in graphs, as graphs will use trend values for displaying older data.

-

<note important>​If history is set to '​0',​ the item will update only inventory. No trigger functions will be evaluated.</​note>​

+

<note important>​If history is set to '​0',​ the item will update only dependent items and inventory. No trigger functions will be evaluated.</​note>​

<note tip>As an alternative way to preserve history consider to use [[manual/​config/​items/​loadablemodules#​providing_history_export_callbacks|history export]] functionality of loadable modules.</​note>​

<note tip>As an alternative way to preserve history consider to use [[manual/​config/​items/​loadablemodules#​providing_history_export_callbacks|history export]] functionality of loadable modules.</​note>​